17 results on '"Grepl, Filip"'
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2. Laser-Driven Ion Sources Generated by Ns Laser Pulses at the Intensity Range of 1013–1015 W/cm2
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Giuffrida, Lorenzo, primary, Istokskaia, Valeriia, additional, Picciotto, Antonino, additional, Kantarelou, Vasiliki, additional, Barozzi, Mario, additional, Dell`Anna, Rosanna, additional, Divoký, Martin, additional, Denk, Ondrej, additional, Giubertoni, Damiano, additional, Grepl, Filip, additional, Hadjikyriacou, Asenios, additional, Hanus, Martin, additional, Krása, Josef, additional, Kucharik, Milan, additional, Levato, Tadzio, additional, Navratil, Petr, additional, Pilar, Jan, additional, Schillaci, Francesco, additional, Stancek, Stanislav, additional, Tosca, Marco, additional, Tryus, Maksym, additional, Velyhan, Andriy, additional, Lucianetti, Antonio, additional, Mocek, Tomáš, additional, and Margarone, Daniele, additional
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- 2023
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3. Parametric amplification as a single-shot time-resolved off-harmonic probe for laser-matter interactions
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Grepl, Filip, primary, Tryus, Maksym, additional, Chagovets, Timofej, additional, and Margarone, Daniele, additional
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- 2023
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4. The ELIMAIA Laser–Plasma Ion Accelerator: Technological Commissioning and Perspectives
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Schillaci, Francesco, primary, Giuffrida, Lorenzo, additional, Tryus, Maksym, additional, Grepl, Filip, additional, Stancek, Stanislav, additional, Velyhan, Andriy, additional, Istokskaia, Valeriia, additional, Levato, Tadzio, additional, Petringa, Giada, additional, Cirrone, Giuseppe, additional, Cupal, Josef, additional, Koubiková, Lucia, additional, Peceli, Davorin, additional, Jarboe, Jeffrey, additional, de Castro Silva, Tarcio, additional, Cuhra, Martin, additional, Chagovets, Timofej, additional, Kantarelou, Vasiliki, additional, Tosca, Marco, additional, Ivanyan, Vahagn, additional, Greplová Žáková, Martina, additional, Psikal, Jan, additional, Truneček, Roman, additional, Cimmino, Anna, additional, Versaci, Roberto, additional, Olšovlcová, Veronika, additional, Kramer, Daniel, additional, Bakule, Pavel, additional, Ridky, Jan, additional, Korn, Georg, additional, Rus, Bedrich, additional, and Margarone, Daniele, additional
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- 2022
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5. Deuterons and neutrons from cryogenic deuterium ribbons at Vulcan Petawatt
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Ho, Chloe, Ahmed, Hamad, McIlvenny, Aodhan, Bonnay, Patrick, Chagovets, Timofej, Chatain, Denis, Ferguson, Simon, Garcia, David, Girard, Alain, Giuffrida, Lorenzo, Greenwood, Benjamin, Grepl, Filip, Lazzarini, Carlo, Milluzzo, Giuliana, Nawaz, Fahad, Notley, Margaret, Schillaci, Francesco, Scuderi, Valentina, Souris, Fabien, Tryus, Maksym, Velyhan, Andriy, Margarone, Daniele, Borghesi, Marco, and Kar, Satyabrata
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Atomic and Molecular Physics, and Optics - Abstract
The sustained interest in laser-driven neutron sources comes from their compactness and affordability while opening the possibilities for a wide range of applications, potentially complementing the research carried out at large-scale spallation facilities. An experiment was carried out at the Vulcan Petawatt facility (CLF, UK) to generate bright, ultra-short neutron bursts employing cryogenic ribbons of solid deuterium. Cryogenic targets can in principle produce single species, debris-free ion beams suitable for a wide range of applications. Deuterium ions up to 25 MeV/nucleon were detected in the forward direction, correspondingly with high energy neutrons in high fluxes being produced. Due to the low density of the target (∼200 mg/cc) and the significant radiation pressure at the delivered laser intensities (5 × 1019 − 5 × 1020 W/cm2), considerable compression of the deuterium plasma at the front surface is expected and accelerating bulk deuterium by the hole-boring mechanism. The neutrons are subsequently produced by the d(d,n)3He fusion reaction in the target bulk driven by ions produced by the hole-boring front. Preliminary particle-in-cell simulations support the experimental results to explain the underlying physics involving ps-class lasers at linear polarisation.
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- 2022
6. Distortion of Thomson Parabolic-Like Proton Patterns Due to Electromagnetic Interference
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Grepl, Filip, primary, Krása, Josef, additional, Velyhan, Andriy, additional, De Marco, Massimo, additional, Dostál, Jan, additional, Pfeifer, Miroslav, additional, and Margarone, Daniele, additional
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- 2021
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7. Real-time bremsstrahlung detector as a monitoring tool for laser–plasma proton acceleration
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Istokskaia, Valeria, Lefebvre, Benoit, Versaci, Roberto, Dreghici, Dragana B., Doria, Domenico, Grepl, Filip, Olšovcová, Veronika, Schillaci, Francesco, Stanček, Stanislav, Tryus, Maksym, Velyhan, Andriy, Margarone, Daniele, and Giuffrida, Lorenzo
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AbstractReal-time evaluation of laser-driven byproducts is crucial for state-of-the-art facilities operating at high repetition rates. This work presents real-time measurements of hard X-rays (bremsstrahlung radiation) generated from the interaction of high-intensity laser pulses with solid targets in the target normal sheath acceleration regime using a scintillator stack detector. The detector offers insights into the effectiveness of laser–plasma interaction through measured fluctuations in bremsstrahlung radiation temperature and scintillation light yield on a shot-to-shot basis. Moreover, a strong correlation of the bremsstrahlung measurements (i.e., temperature and yield) with the cutoff energy of laser-driven protons was observed. The scintillator stack detector serves not only as a diagnostic for online monitoring of the laser–plasma interaction but also as a promising tool for estimating proton energy fluctuations in a non-disruptive manner, which is particularly important when direct proton source characterization is impractical, for example, during experiments aimed at irradiating user samples with the accelerated proton beam.
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- 2024
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8. Automation of Target Delivery and Diagnostic Systems for High Repetition Rate Laser-Plasma Acceleration
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Chagovets, Timofej, primary, Stanček, Stanislav, additional, Giuffrida, Lorenzo, additional, Velyhan, Andriy, additional, Tryus, Maksym, additional, Grepl, Filip, additional, Istokskaia, Valeriia, additional, Kantarelou, Vasiliki, additional, Wiste, Tuomas, additional, Hernandez Martin, Juan Carlos, additional, Schillaci, Francesco, additional, and Margarone, Daniele, additional
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- 2021
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9. TERESA Target Area at ELI Beamlines
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Tryus, Maksym, primary, Grepl, Filip, additional, Chagovets, Timofej, additional, Velyhan, Andriy, additional, Giuffrida, Lorenzo, additional, Stancek, Stanislav, additional, Kantarelou, Vasiliki, additional, Istokskaia, Valeria, additional, Schillaci, Francesco, additional, Zakova, Martina, additional, Psikal, Jan, additional, Nevrkla, Michal, additional, Lazzarini, Carlo Maria, additional, Grittani, Gabriele Maria, additional, Goncalves, Leonardo, additional, Nawaz, Muhammad Fahad, additional, Cupal, Josef, additional, Koubíkova, Lucia, additional, Buck, Samuel, additional, Weiss, Jiri, additional, Peceli, Davorin, additional, Szotkowski, Petr, additional, Majer, Karel, additional, Naylon, Jack Alexander, additional, Green, Jonathan Tyler, additional, Kramer, Daniel, additional, Rus, Bedrich, additional, Korn, Georg, additional, Levato, Tadzio, additional, and Margarone, Daniele, additional
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- 2020
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10. Experimental Study of Nanosecond Laser-Generated Plasma Channels
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Levato, Tadzio, primary, Nevrkla, Michal, additional, Nawaz, Muhammad Fahad, additional, Giuffrida, Lorenzo, additional, Grepl, Filip, additional, Zulic, Haris, additional, Pilar, Jan, additional, Hanus, Martin, additional, Divoky, Martin, additional, Lucianetti, Antonio, additional, Mocek, Tomas, additional, and Margarone, Daniele, additional
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- 2020
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11. Diagnostics and Dosimetry Solutions for Multidisciplinary Applications at the ELIMAIA Beamline
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Scuderi, Valentina, primary, Amato, Antonino, additional, Amico, Antonio, additional, Borghesi, Marco, additional, Cirrone, Giuseppe, additional, Cuttone, Giacomo, additional, Fajstavr, Antonin, additional, Giuffrida, Lorenzo, additional, Grepl, Filip, additional, Korn, Georg, additional, Larosa, Giuseppina, additional, Leanza, Renata, additional, Margarone, Daniele, additional, Milluzzo, Giuliana, additional, Petringa, Giada, additional, Pipek, Jan, additional, Russo, Antonio, additional, Schillaci, Francesco, additional, Velyhan, Andriy, additional, and Romano, Francesco, additional
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- 2018
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12. ELIMAIA: A Laser-Driven Ion Accelerator for Multidisciplinary Applications
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Margarone, Daniele, primary, Cirrone, G., additional, Cuttone, Giacomo, additional, Amico, Antonio, additional, Andò, Lucio, additional, Borghesi, Marco, additional, Bulanov, Stepan, additional, Bulanov, Sergei, additional, Chatain, Denis, additional, Fajstavr, Antonín, additional, Giuffrida, Lorenzo, additional, Grepl, Filip, additional, Kar, Satyabrata, additional, Krasa, Josef, additional, Kramer, Daniel, additional, Larosa, Giuseppina, additional, Leanza, Renata, additional, Levato, Tadzio, additional, Maggiore, Mario, additional, Manti, Lorenzo, additional, Milluzzo, Guliana, additional, Odlozilik, Boris, additional, Olsovcova, Veronika, additional, Perin, Jean-Paul, additional, Pipek, Jan, additional, Psikal, Jan, additional, Petringa, Giada, additional, Ridky, Jan, additional, Romano, Francesco, additional, Rus, Bedřich, additional, Russo, Antonio, additional, Schillaci, Francesco, additional, Scuderi, Valentina, additional, Velyhan, Andriy, additional, Versaci, Roberto, additional, Wiste, Tuomas, additional, Zakova, Martina, additional, and Korn, Georg, additional
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- 2018
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13. Liquid jet target system for laser-plasma interactions at kHz repetition rate.
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Gamaiunova, Nina, Tryus, Maksym, Grepl, Filip, Velyhan, Andriy, Stancek, Stanislav, Kantarelou, Vasiliki, Cirrone, G. A. Pablo, Margarone, Daniele, Giuffrida, Lorenzo, and Chagovets, Timofej
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- 2023
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14. Liquid jet target system for laser-plasma interactions at kHz repetition rate
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Bulanov, Stepan S., Schroeder, Carl B., Schreiber, Jörg, Jaroszynski, Dino A., Hur, Min Sup, Gamaiunova, Nina, Tryus, Maksym, Grepl, Filip, Velyhan, Andriy, Stancek, Stanislav, Kantarelou, Vasiliki, Cirrone, G. A. Pablo, Margarone, Daniele, Giuffrida, Lorenzo, and Chagovets, Timofej
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- 2023
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15. Detekce Akustické Prostředí z Řeči
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Matějka, Pavel, Beneš, Karel, Grepl, Filip, Matějka, Pavel, Beneš, Karel, and Grepl, Filip
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Tato práce se zabývá vytvořením systému, jehož úkolem je z audio signálu rozpoznat, na jakém místě byla vstupní nahrávka pořízena. Klasifikátor je založen na vícevrstvé hustě propojené neuronové síti. Topologie neuronové sítě vychází ze základního systému, poskytovaného k soutěži DCASE. Pro její trénování a evaluaci je využita datová sada rovněž z této soutěže. Experimenty jsou prováděny zejména s reprezentací vlastností jednotlivých audio nahrávek a formátem vstupních dat. Za tímto účelem jsou využity Mel-filter bank, blok Mel-filter bank a MFCC příznaky. Experimenty, provedené v této práci, přinesly oproti základnímu systému soutěže DCASE vyšší přesnost klasifikace o 6.5 %. Celková úspěšnost systému tak dosáhla hodnoty 67.5 %., This thesis deals with creating a system whose task is to recognize what type of location the recording was created at by analyzing the audio signal. The classifier is based on a multi-layer, fully connected neural network. The topology of the neural network is based on the baseline system provided for the DCASE competition. A dataset from this competition is also used for training and evaluating the neural network. The experiments are performed in particular with the representation of the properties of the audio records and with the format of the input data of the neural network. For this purpose, Mel-filter bank, block Mel-filter bank and MFCC flags are used. The experiments performed in this thesis brought a classification accuracy increased by 6.5 % compared to the baseline system of DCASE. Overall system success rate reached 67.5 %.
16. Aplikace pro řízení paralelního zpracování dat
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Dytrych, Jaroslav, Smrž, Pavel, Grepl, Filip, Dytrych, Jaroslav, Smrž, Pavel, and Grepl, Filip
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Tato práce se zabývá návrhem a realizací systému pro paralelní spouštění úloh ve Výzkumné skupině znalostních technologií. Cílem je vytvořit webovou aplikaci, která umožní řídit jejich zpracování a monitorovat běhy těchto úloh včetně využití systémových prostředků. V práci je nejprve analyzován současný způsob paralelního zpracování dat a nedostatky tohoto řešení. Poté jsou v práci popsány existující nástroje včetně problémů, které jejich testovací nasazení odhalilo. Na základě těchto poznatků jsou definovány požadavky na novou aplikaci a vytvořen návrh celého systému. Následně jsou popsány vybrané části implementace a způsob testování celého systému, které zahrnuje i porovnání efektivity s původním systémem., This work deals with the design and implementation of a system for parallel execution of tasks in the Knowledge Technology Research Group. The goal is to create a web application that allows to control their processing and monitor runs of these tasks including the use of system resources. The work first analyzes the current method of parallel data processing and the shortcomings of this solution. Then the work describes the existing tools including the problems that their test deployment revealed. Based on this knowledge, the requirements for a new application are defined and the design of the entire system is created. After that the selected parts of implementation and the way of the whole system testing is described together with the comparison of the efficiency with the original system.
17. ELIMAIA: A Laser-Driven Ion Accelerator for Multidisciplinary Applications
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Boris Odlozilik, Andriy Velyhan, R. Leanza, Jean-Paul Perin, Veronika Olšovcová, Denis Chatain, Giada Petringa, A. Fajstavr, Lucio Andò, Francesco Schillaci, Sergei V. Bulanov, Filip Grepl, Mario Maggiore, Giacomo Cuttone, Martina Zakova, Daniel B. Kramer, Guliana Milluzzo, Georg Korn, Valentina Scuderi, J. Pipek, G. A. Pablo Cirrone, Giuseppina Larosa, Lorenzo Giuffrida, A.G. Amico, Jan Ridky, Josef Krasa, Jan Psikal, Lorenzo Manti, Bedřich Rus, Marco Borghesi, Satyabrata Kar, Tadzio Levato, A. D. Russo, Daniele Margarone, Roberto Versaci, Stepan Bulanov, Tuomas Wiste, Francesco Romano, Margarone, Daniele, Cirrone, G., Cuttone, Giacomo, Amico, Antonio, Andò, Lucio, Borghesi, Marco, Bulanov, Stepan, Bulanov, Sergei, Chatain, Deni, Fajstavr, Antonín, Giuffrida, Lorenzo, Grepl, Filip, Kar, Satyabrata, Krasa, Josef, Kramer, Daniel, Larosa, Giuseppina, Leanza, Renata, Levato, Tadzio, Maggiore, Mario, Manti, Lorenzo, Milluzzo, Guliana, Odlozilik, Bori, Olsovcova, Veronika, Perin, Jean-Paul, Pipek, Jan, Psikal, Jan, Petringa, Giada, Ridky, Jan, Romano, Francesco, Rus, Bedřich, Russo, Antonio, Schillaci, Francesco, Scuderi, Valentina, Velyhan, Andriy, Versaci, Roberto, Wiste, Tuoma, Zakova, Martina, and Korn, Georg
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Dosimetry of laser-driven ions ,Ultrahigh intensity laser-matter interaction ,Technology ,Nuclear and High Energy Physics ,Extreme Light Infrastructure ,Compact accelerator ,laser-plasma acceleration ,Laser-ion beamline ,Pulsed ion beams ,01 natural sciences ,law.invention ,Acceleration ,Multidisciplinary applications of ions ,ultrahigh intensity laser-matter interaction ,Multidisciplinary approach ,law ,ion beam transport ,0103 physical sciences ,Thermal emittance ,Aerospace engineering ,010306 general physics ,Particle beam ,010308 nuclear & particles physics ,business.industry ,pulsed ion beams ,Laser ,laser-ion beamline ,multidisciplinary applications of ions ,Atomic and Molecular Physics, and Optics ,TK1-9971 ,Experimental system ,Beamline ,compact accelerator ,Ion beam transport ,Electrical engineering. Electronics. Nuclear engineering ,dosimetry of laser-driven ions ,business ,Laser-plasma acceleration - Abstract
The main direction proposed by the community of experts in the field of laser-driven ion acceleration is to improve particle beam features (maximum energy, charge, emittance, divergence, monochromaticity, shot-to-shot stability) in order to demonstrate reliable and compact approaches to be used for multidisciplinary applications, thus, in principle, reducing the overall cost of a laser-based facility compared to a conventional accelerator one and, at the same time, demonstrating innovative and more effective sample irradiation geometries. The mission of the laser-driven ion target area at ELI-Beamlines (Extreme Light Infrastructure) in Dolní Břežany, Czech Republic, called ELI Multidisciplinary Applications of laser-Ion Acceleration (ELIMAIA), is to provide stable, fully characterized and tuneable beams of particles accelerated by Petawatt-class lasers and to offer them to the user community for multidisciplinary applications. The ELIMAIA beamline has been designed and developed at the Institute of Physics of the Academy of Science of the Czech Republic (IoP-ASCR) in Prague and at the National Laboratories of Southern Italy of the National Institute for Nuclear Physics (LNS-INFN) in Catania (Italy). An international scientific network particularly interested in future applications of laser driven ions for hadrontherapy, ELI MEDical applications (ELIMED), has been established around the implementation of the ELIMAIA experimental system. The basic technology used for ELIMAIA research and development, along with envisioned parameters of such user beamline will be described and discussed.
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- 2018
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